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Old 27 November 2004, 09:14 AM
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forest172
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Default Decating MY03 STI

If I was to remove the downpipe cat and centre cat will my STI run ok or will it need remapping???
Old 27 November 2004, 11:12 AM
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simo
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remap would be v advisable otherwise you could have det & other problems. Mind you, saying that, I ran my old P1 for 2 years & 45k miles on full decat with no remap. (did use super & octane booster thou)

I would not not consider doing it unless I was prepared to get a remap.

simon
Old 27 November 2004, 11:34 AM
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Nevetas
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Originally Posted by forest172
If I was to remove the downpipe cat and centre cat will my STI run ok or will it need remapping???
I was going to do this to my 02 STi and was advised by Pat that mapping should be done at the same time to keep things safe.

Best to do it all at once IMO.

Remember you will also need an uprated fuel pump for a remap, I put a regulator on aswell.
Old 27 November 2004, 03:16 PM
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scooby L
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Originally Posted by Nevetas
Remember you will also need an uprated fuel pump for a remap.
Bob checked my fuel pressure when he mapped my 2003STI

He said an uprated fuel pump was not needed...so it's mapped on the standard one.

So it not all gloom and doom (money wise that is)
Old 27 November 2004, 03:28 PM
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ARRON BIRD
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Originally Posted by forest172
If I was to remove the downpipe cat and centre cat will my STI run ok or will it need remapping???
Dont bother unless you fit an uprated fuel pump and get your car re-mapped.
But then what the **** do I know.
Simo where`s my Erasure cd???
Old 27 November 2004, 03:38 PM
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simo
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still looking u big fairy
Old 27 November 2004, 06:10 PM
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Nevetas
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Originally Posted by scooby L
Bob checked my fuel pressure when he mapped my 2003STI

He said an uprated fuel pump was not needed...so it's mapped on the standard one.

So it not all gloom and doom (money wise that is)
For the extra 100-120ish quid I'd rather have an uprated one myself, atleast then you know it can handle it 100%
Old 27 November 2004, 06:29 PM
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I presume a remap isnt required for a free flow backbox on it's own?

Regards,
Shaun.
Old 27 November 2004, 06:44 PM
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Nevetas
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No, backbox should fine without a remap.

In fact you could do backbox and centre section without a problem.
Old 27 November 2004, 11:47 PM
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forest172
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cheers guys i`ve already got an afterburner backbox. Might give it a miss until the warrenty has expired!!!! Then TSL 333 or something!!
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